<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        class Http{
            static request(){
                console.log("http");
            }
            say(){
                console.log("say");
            }
        }
        Http.request();//http 加了static可以直接调用
        Http.say()//报错
    </script>
</body>
</html>